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AssigneeNovartis AG
InventorsPeter Hagmann, Axel Heinrich, Iris Leder-Bruck, Bernhard Seiferling, Werner Steffan
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A process of dosing a starting material (SM) for optical lenses, into a female mold half (2), comprises the steps of: positioning a dosing tip (1) at a start position (P2) above the female mold half (2) and close to the edge of or laterally outside that portion (20) defining the lens-shaping surface, creating a continuous flow of starting material (SM) through the dosing tip (1) into the female mold half (2), moving the dosing tip (1) from the start position (P2) towards an end position (P3) in the region of the center of the female mold half (2) once the starting material (SM) has contacted the surface (21) of the female mold half (2) with the dosing tip (1) being in the start position (P2), wherein the continuous flow of starting material (SM) through the dosing tip (1) and the movement of the dosing tip (1) from the start position (P2) to its end position (P3) are controlled such, that a continuous bead (B) of starting material (SM) is deposited on the surface (21) of the female mold half (2) and that the essential part of the overall volume of starting material (SM) dosed into the female mold half (2) is deposited within the female mold half (2) with the dosing tip (1) being in the end position (P3).
Process of dosing a starting material for optical lenses into a female mould half having a concave surface, the process comprising the steps of:
Process according to any one of the preceding claims, wherein the flow of starting material through the dosing tip and the movement of the dosing tip from its start position towards its end position are controlled such that only a thin but continuous film of starting material is deposited on the surface of the female mould half until the dosing tip has reached the end position.
Dependencies are inferred from the claim text.